如何重用事件处理程序？

Question

I got a code:

private void border1_PreviewGiveFeedback(object sender, GiveFeedbackEventArgs e)
{
    // some code
}

mainwindow.xaml:

<Border BorderBrush="Silver" PreviewGiveFeedback="border1_PreviewGiveFeedback"
        Name="border1" />

Now i want to reuse the event handler in border1 inside border2 (without writig the same code in border2 and cs file) What to write here:

<Border Name="border2" />

Answer 1

我认为与您在第一个边界中使用的相同

<Border PreviewGiveFeedback="border1_PreviewGiveFeedback" Name="border2" />

Answer 2

The PreviewGiveFeedback property is simply asking for an event handler with a certain signature. You could actually name it Potatoes_AreTasty__YUM and it would function perfectly well as long as it had the proper signature.

Thus, the way to use it in border2 is to just give it the same event method as border1. You could also re-name the function to indicate that it isn't exclusively for border1 but a generic border preview event handler.

Answer 3

You can do exactly the same:

<Border Name="border2" PreviewGiveFeedback="border1_PreviewGiveFeedback" />

is going to work. You should consider renaming the event handler method in that case, though.